Indicator



May 22, 1923.-

H. W. SLAUSON INDICATOR Filed May 24, 1920 2 Sheets-Sheet l LEVEL- WI ND RE5)5TANCE ONLY- LEVEL- wmn RISISTANCEONIIG' A TTORNEYS May 22, 1923. 1,456,155 H. w. SLAUSON INDICATOR Filed May 24. 1920 2 Sheets-Sheet 2 INVENTOR. EN. glmas'owzfl A TTORNEYS Patented May 22, 1923,

EARGLD "OVHITING SLAUSGN, @F N YORK, N.

IETDICCATQR.

Application filed may 24, 1920. Serial r le. 84.

T 0 all whom it may concern:

Be it known that l, Herons Wnrrrnc SLAUsoN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new .llmprovements in Indicators, of which the following is a specification.

This invention relates to indicators and more particularly to devices for indicating the quantity of a force incident to the motion of a vehicle and dependent on at least two variable quantities, one of which is the quantity of inclination of the vehicle relative to the horizontal. it has as one of its objects the provision of a simple and eflective means for indicating the quantity of the resultant variable property at all times as component quantities, which determine the quantity of the resultant force, vary, thus facilitating, for instance, the comparison o'f the horsepower necessary to maintain an automobile at a given speed on a given grade with that necessary to maintain the same automobile at various other speeds on various grades.

Another object is the provision of aolevice of this kind which will indicate the value of at least one or" the variable component quantities and a still further object is the provision of a device of this kind which may be readily adjusted to adapt it for use with various vehicles to suit one constant quantity of the particular vehicle which is a component of the resultant force indicated.

Other objects of the invention and the features of novelty will be apparent from the following specification when taken in connection with the accompanying drawings in which Figure 1 is a view in elevation of a device emhodying my invention.

Figs. 2 and 3 are respectively views in elevation of parts of the structure shown in Fig. 1.

Figs. 4% and 5 are respectively a front ele- --vation and a side elevation, partly in section, of a modified structure embodying my invention, and

horizontal, the structure shown in Figs. 1

to 3 being shown as adaptable to vehicles of difierent weights. It will be apparent, however, that indicia representing another resultant quantity than horsepower may be used, and that the various parts may be relatively movable in response to changes in other variable component quantities than those of speed and inclination.

In the modification shown in Figures 1, 2 and 3 a dial 11 is'provided which has a perforated lug 12 by which it may be rigidly and reinovably secured "to the body of a moving vehicle, with the plane of the dial substantially vertical and parallel to the direction of motion of the vehicle. A sight opening 13 is formed in the dial 11, preferably extending radially inwardly i'rom its forward edge, and adjacent the opening 13 numerals representing speed are displayed, preferably increasing in order from left to right as shown. A second dial 14 is arranged adjacent to the dial 11 and mounted for pivotal movement relative thereto about pin 15 which passes through both dials. Adjacent its edge the dial 1% is formed with a plurality of circumferentially spaced openings 16 to provide for the attachment of a weight 1'? in various positions relative to the dial. Since the dial let is freely movable in a vertical plane it will assume a different position for each oint of attachment of the weight 1? and will be maintained in such position by force of gravity, so that as the vehicle changes its inclination, the dial 111 will move relatively to the dial 141, and the opening 13 will sweep over a sector oi the dial 14. Adjacent the edge of the dial 14 sets of indicia, representing grade or longi tudinal inclination, are displayed, the indicia of any setbeing arranged to register 5 successively with the end of the opening 13 or some other suitable reading point, to indicate the inclination at any particular time, such indicia preferably representing grade in er cent as shown.

n the dial l4 numerals indicating horsepower arearranged to correspond radially with their grade components and circumferentially with their speed components, so that when the car to which the indicator is attached is moving up a given grade those numerals which represent the horsepower necessary for maintaining the car on that grade at various speeds will be in View at the opening 13 and in registry with the numerals which indicate the various speeds. The numerals indicating horsepower are different in the diiierent sectors,

to correspond with ditierent values of a constant factor, such as the weight of the moving body, and the disc M is provided,

adjacent each of the openings 16 with a suitable inscription indicating the constant factor involved in that series of computed results which is brought into registry with opening 18 for any given position of the weigh 17. The horsepower is dependent dire" upon the quantity of force applied, and this force is a function of the variable quantities of speed and inclinatl th and constant quantities of '-e product of the mass and the gravity) wi' i; resistant and frie- M nt various e matheto well be evifor various sets of numerals indicating horsepower applicable for the various grades.

Figures 4: and 5 illustrate a modified structure in which my invention is applied to a speedometer of familiar type, comprising a casing 21 which has an opening at one end closed by a dial 22 and a transparent face plate 23. A. cylindrical dial 24, is rotatably mounted in the casing 21 and surrounds suitable operating mecha; nism of any approved form by which the dial is movedabout a substantially vertical axis in response to changes of speed, the numerals which indicate the speed being visible through a reading opening 25 in the dial 22. Another reading opening 26, or a downward extension of the opening 25, is formed in the dial 22, to permit a view of a circumferentially'limited portion of the dial 24,- proferably immediately below the reading point 27. Numerals representing horse-power are arranged on the dial 2a to correspond vertically with the various numerals which represent speed and to correspond horizontally with various grades, and numerals representing the various grades are arranged on the dial 22 adjacent the opening A spirit level 28 is suitably secured position in the casing :21 as shown at 29, the one end of the level being bent upwardly een the dial 22 and the face plate 28 adgacent the opening the liquid therein 'c and the correspondwhich rep esents cerres ondir ade will indicat ing numeral the horse quantities of speed and inciinstion and the constant quantities of Weight winci resistence and; friction and can be determined according to Weii known physical isws or by trial and measurement,

While several embodiments of the invention have been herein shown and described, will be understood that the invention may 'be ntiiizeri for corn ierison of other variable member carried by the vehicie and responsive to the rorce or" ors-vity. and a member carried by the vehicle and movebie reiativo to ssici first mentioned member in response to changes of inciinstion of said vehicie one of said members having thereon ii series of resuitsnt inciioie oi which. inciinetion anti another vsriebie quantity ore factors or- .to correspond in direction with their inciination components and in another direction with their other vsrishie quantity components, aiui the other of said members having indicie thereon representing said other variable uantity components arranged to register with. the resuitent indicia of which they are factors,

cievice for inoiicating the inso'nitude of o resuitsnt quantity incident to the motion or" a vehicie coinprisii'ip; a member having thereon s. plurality of series of resnitant indicie, the indicie in each of said series being a function of at constant cornponent quantity which varies with various vehicies, the resultant indicie in. each series being srrsngeci to correspond in one direction with inciination components and in another direction with other vsriabie quantity components and; a member having thereon indicie representing said other variable uentity components one of said members oeing adapted for rigid attachment to said vehicie end'the other of said members being movable relative to said body end responsive to the force of gravity, the

relative position of said members being solectiveiy adjustable to bring the various series of resultant inciicio on the one member into position aiijscent the inoicie on the other member,

3. A oievice for indicating the magnitude of a resultant quantity incident to the motion of a inclination prising s tscneci piciity the resuitsnt pivotoiiy mounted 21 her and bovine" (Lilc adopted to be ri idiy icie and having tzereothe of indicie representing): I.

res iin one, and i v V se sctiveif/ cooperating with various tions r indicating ihe inciinstion 1 relative to the h iZOBifii resnitsn o entity oi which e inchand one 161' variable qusnti y are comprising a member eci by oi body andv responsive to terrestrie svi- :ion to illiiiili-c .L constent position reisto the horiscntsh and a inenii rigid moving; body and inovsbie thereto seici means in response to linction of said bodgn one of members i sving" s reading iine and in i 6 other varia le quenscent ,snci the other hsving representing inclination one series of resuitsnt inc so (i those having the sonic iciinetion co ponent register with the res "i ie time, In an inciicssor, the combination of a member having; thereon indicie representing speed snoi av member having thereon inciicis representing inciinstion and indicis representing quantity vsriabie with speed and inciination, one of said members being inovsbie relative to the other in response changes in inciinstion.

'cetor the combination of s. son a series oi? resuitant inciicis srisngeci in one direction to corr spond with inciinstion components end in an iiti'iev direction to correspond with another set of components, and s c'iisi hsving Window therein sn said other set of components adjacent thereto one of said n being Qi is movable reistiveiy to the other and responsive to changes in inclination to bring the various groups of resultant indicio into View in registry with their components of the other set.

device for indicating the magnitude of a resuitsnt quantity incident to the motion of vehicie which is a function of its speed and inciinstion reistive to the hori-. zontsi, comprising a member having thereon a series of resuitsnt indicis errangeii in one direction to correspond with their speed components and in another direction with their inclination components, and o second member adjacent said first member, one of said members being rigid with the moving body, means for moving the other of said members in response to changes of speed of the body to indicate the group of resultant indicia corresponding to a given speed component, and means responsive to changes of inclination of the body to indicate that computed result in the group which corresponds to a given inclination.

8. A device for indicating the magnitude of a resultant quantity incident to the motion of a vehicle which is a function of speed and inclination relative to the horizontal comprising a housing rigid with said body and having a sight opening, a member mounted in said housing and having thereon a series of resultant indicia arranged to correspond. in one direction with their speed components and in another direction with their inclination components, said member being movable in one direction relative to said sight opening in response to changes of speed, and means responsive to terrestrial gravitation to maintain its position relative to the horizontal and movable in another direction relative to said sight opening 7 In testimony whereof I have hereunto set my hand.

HAROLD WHITING SLAUSON 

